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Make sure to check your motor mounts too, this caused mine to crack prematurely. The 4.0L mounts a famous for this and they are fairly inexpesive to replace( I replaced both of mine for under $50) :o

With the engine off but the ignition on, unplug the connector to the switch in the radiator and short them out with a short wire. If you here a clicking sound but the fan does not come on, that means you have power to the relay but not to the fan. If you here nothing, the whole system has no...

There is an idle step motor in the throttle body next to the throttle position sensor(It the one on the left closest to the head) This is what the comuter uses to adjust idle sometimes these get stuck it only held on by @ screws

I just went through this samething on my 88. There is a temp switch in the radiator. It's on the drivers side below the hose outlet. I bet this is your problem. It's a pain in the a$$ to get to, unless you remove the radiator or air cleaner box. The worst thing, if you opt to remove the...

:?: Has anyone ever herd of putting a t5 transmission into a cherokee and what problems they encountered? I need to replace my automatic with a manual and have herd that the factory ones that came in the cherokees were problematic, but the ones that came in the cj's and wranglers were great, so...

Wow, You said that you used a motor out of a 1995 but used the manifolds off of the 87!I hope you are not talking about the 4.0L because they moved the intake ports up about 3/8" in the 1991 and newer motors. this can cause a small leak that the computer senses and then tries to add fuel for the...

Hey Nick, just out of curiosity, what is OBD-II :D

Where I live, anthing older than 1990 does not need to be inspected to get registerd so that won't be a problem, and the motor I am going to use is out of a wrangler that was newer than my cherokee and never gave me a problem. So if was legal in the wrangler, I don't see why it would't be legal...

I had the same problem with my cherokee and found that I had some bad motor mounts (the rubber had split) that caused the engine to move to much, hence the manifod had to much pressure on it cusing it to crack premature. :roll: Hope this helps. I have had the new mounts for over a year now and...

Why? hansn't anyone else had problems like this?

Because I have replaced 2 computers and about $400 in sensors within the last year and I am tired of beeing broke down. Now it is fried again and this time the shop said the wiring harness is shot and will have to be replaced. If I am going to go to all of that trouble, I figured I would convert...

I am coverting my 89 cherokee to a carb. 258. has anyone done this and know what to about the throttle position sensor for the auto transmission?